The University of Queensland

Role of artificial intelligence in automatic segmentation of brain metastases for radiotherapy

Ramachandran, Prabhakar, Seshadri, Venkatakrishnan, Perrett, Ben, Mehta, Akash, Fontanarosa, Davide, Pinkham, Mark and Foote, Matthew (2022). Role of artificial intelligence in automatic segmentation of brain metastases for radiotherapy. Artificial intelligence in cancer diagnosis and prognosis, Volume 3: Brain and prostate cancer. (pp. 4-1-4-23) edited by Ayman El-Baz and Jasjit S Suri. Bristol, U.K. : IOP Publishing. doi: 10.1088/978-0-7503-3603-1ch4

The first clinical implementation of real-time 6 degree-of-freedom image-guided radiotherapy for liver SABR patients

Sengupta, Chandrima, Trang Nguyen, Doan, Moodie, Trevor, Mason, Daniel, Luo, Jianjie, Causer, Trent, Fan Liu, Sau, Brown, Elizabeth, Inskip, Lauren, Hazem, Maryam, Chao, Menglei, Wang, Tim, Lee, Yoo Y, van Gysen, Kirsten, Sullivan, Emma, Cosgriff, Eireann, Ramachandran, Prabhakar, Poulsen, Per, Booth, Jeremy, O'Brien, Ricky, Greer, Peter and Keall, Paul (2024). The first clinical implementation of real-time 6 degree-of-freedom image-guided radiotherapy for liver SABR patients. Radiotherapy and Oncology, 190 110031, 110031. doi: 10.1016/j.radonc.2023.110031

Design and development of a low-cost integrated dosimeter for external beam dosimetry in radiation oncology

Chant, Tim and Ramachandran, Prabhakar (2023). Design and development of a low-cost integrated dosimeter for external beam dosimetry in radiation oncology. Journal of Medical Physics, 48 (4), 392-397. doi: 10.4103/jmp.jmp_107_23

Generating missing patient anatomy from partially acquired cone-beam computed tomography images using deep learning: a proof of concept

Shields, Benjamin and Ramachandran, Prabhakar (2023). Generating missing patient anatomy from partially acquired cone-beam computed tomography images using deep learning: a proof of concept. Physical and Engineering Sciences in Medicine, 46 (3), 1321-1330. doi: 10.1007/s13246-023-01302-y

Auto-segmentation of thoracic organs in CT scans of breast cancer patients using a 3D U-Net cascaded into PatchGANs

Colbert, Zachery Morton and Ramachandran, Prabhakar (2023). Auto-segmentation of thoracic organs in CT scans of breast cancer patients using a 3D U-Net cascaded into PatchGANs. Biomedical Physics and Engineering Express, 9 (5) 055011. doi: 10.1088/2057-1976/ace631

Assessment of optimizers and their performance in autosegmenting lung tumors

Ramachandran, Prabhakar, Eswarlal, Tamma, Lehman, Margot and Colbert, Zachery (2023). Assessment of optimizers and their performance in autosegmenting lung tumors. Journal of Medical Physics, 48 (2), 129-135. doi: 10.4103/jmp.jmp_54_23

Repurposing traditional U-Net predictions for sparse SAM prompting in medical image segmentation

Colbert, Zachery Morton, Arrington, Daniel, Foote, Matthew, Gårding, Jonas, Fay, Dominik, Huo, Michael, Pinkham, Mark and Ramachandran, Prabhakar (2023). Repurposing traditional U-Net predictions for sparse SAM prompting in medical image segmentation. Biomedical Physics and Engineering Express, 10 (2) 025004, 1-10. doi: 10.1088/2057-1976/ad17a7

Autosegmentation of lung computed tomography datasets using deep learning U-Net architecture

Mehta, Akash, Lehman, Margot and Ramachandran, Prabhakar (2023). Autosegmentation of lung computed tomography datasets using deep learning U-Net architecture. Journal of Cancer Research and Therapeutics, 19 (2), 289-298. doi: 10.4103/jcrt.jcrt_119_21

Investigation of computed tomography numbers on multiple imaging systems using single and multislice methods

Ramachandran, Prabhakar, Mehta, Akash, Arrington, Daniel, Motley, Ryan, Seshadri, Venkatakrishnan, Anderson, Darcie, Lehman, Margot and Perrett, Ben (2023). Investigation of computed tomography numbers on multiple imaging systems using single and multislice methods. Journal of Medical Physics, 48 (1) 26, 1-12. doi: 10.4103/jmp.jmp_3_23

Autosegmentation of brain metastases using 3D FCNN models and methods to manage GPU memory limitations

Bognar, Joshua and Ramachandran, Prabhakar (2022). Autosegmentation of brain metastases using 3D FCNN models and methods to manage GPU memory limitations. Biomedical Physics and Engineering Express, 8 (6) 065027, 1-13. doi: 10.1088/2057-1976/ac9b5b

A framework for exactrac dynamic commissioning for stereotactic radiosurgery and stereotactic ablative radiotherapy

Ramachandran, Prabhakar, Perrett, Ben, Ukath, Jaysree, Horgan, Emma and Noble, Chris (2022). A framework for exactrac dynamic commissioning for stereotactic radiosurgery and stereotactic ablative radiotherapy. Journal of Medical Physics, 47 (4), 398-408. doi: 10.4103/jmp.jmp_67_22

A direct comparison of the optically stimulated luminescent properties of BeO and Al2O3 for clinical in-vivo dosimetry

Broadhead, Benjamin, Noble, Christopher and Ramachandran, Prabhakar (2022). A direct comparison of the optically stimulated luminescent properties of BeO and Al2O3 for clinical in-vivo dosimetry. Physical and Engineering Sciences in Medicine, 45 (3), 859-866. doi: 10.1007/s13246-022-01155-x

Comparison and validation of multiple detectors against monte carlo simulation for the use of small-field dosimetry

Ramachandran, Prabhakar, Parveen, Nazia, Seshadri, Venkatakrishnan, Perrett, Ben and Fielding, Andrew (2022). Comparison and validation of multiple detectors against monte carlo simulation for the use of small-field dosimetry. Journal of Medical Physics, 47 (3), 235-242. doi: 10.4103/jmp.jmp_35_22

A feasibility study on the development and use of a deep learning model to automate real-time monitoring of tumor position and assessment of interfraction fiducial marker migration in prostate radiotherapy patients

Motley, Ryan, Fielding, Andrew L and Ramachandran, Prabhakar (2022). A feasibility study on the development and use of a deep learning model to automate real-time monitoring of tumor position and assessment of interfraction fiducial marker migration in prostate radiotherapy patients. Biomedical Physics and Engineering Express, 8 (3) 035009. doi: 10.1088/2057-1976/ac34da

Automatic detection and tracking of marker seeds implanted in prostate cancer patients using a deep learning algorithm

Amarsee, Keya, Ramachandran, Prabhakar, Fielding, Andrew, Lehman, Margot, Noble, Christopher, Perrett, Ben and Ning, Daryl (2021). Automatic detection and tracking of marker seeds implanted in prostate cancer patients using a deep learning algorithm. Journal of Medical Physics, 46 (2), 80-87. doi: 10.4103/jmp.JMP_117_20

Use of GammaPlan convolution algorithm for dose calculation on CT and cone-beam CT images

Ramachandran, Prabhakar, Perrett, Ben, Dancewicz, Orrie, Seshadri, Venkatakrishnan, Jones, Catherine, Mehta, Akash and Foote, Matthew (2021). Use of GammaPlan convolution algorithm for dose calculation on CT and cone-beam CT images. Radiation Oncology Journal, 39 (2), 129-138. doi: 10.3857/roj.2020.00640

Contralateral breast dose with electronic compensators and conventional tangential fields - A clinical dosimetric study

Ramachandran, Prabhakar, Smith, Amanda, Hagekyriakou, Jim, Hughes, Jeremy, Lonski, Peta, Howard, Beth, Osbourne, Glen, Orr, Kylie, Kaur, Ravneet and Kron, Tomas (2021). Contralateral breast dose with electronic compensators and conventional tangential fields - A clinical dosimetric study. Zeitschrift fur medizinische Physik, 31 (4), 347-354. doi: 10.1016/j.zemedi.2021.04.003

A 3D printed phantom to assess MRI geometric distortion

Ramachandran, Prabhakar, Noble, Christopher, Langton, Christian, Perrett, Ben, Cox, Joshua, Chapman, Mike and McGill, George (2021). A 3D printed phantom to assess MRI geometric distortion. Biomedical Physics and Engineering Express, 7 (3) 035004, 035004. doi: 10.1088/2057-1976/abeb7e

Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy

Chen, Semaya Natalia, Ramachandran, Prabhakar and Deb, Pradip (2020). Dosimetric comparative study of 3DCRT, IMRT, VMAT, Ecomp, and Hybrid techniques for breast radiation therapy. Radiation Oncology Journal, 38 (4), 270-281. doi: 10.3857/roj.2020.00619

Development of a multicentre automated model to reduce planning variability in radiotherapy of prostate cancer

Panettieri, Vanessa, Ball, David, Chapman, Adam, Cristofaro, Nigel, Gawthrop, Janet, Griffin, Peter, Herath, Sisira, Hoyle, Susan, Jukes, Liam, Kron, Tomas, Markham, Cathy, Marr, Loretta, Moloney, Phillip, Nelli, Flavio, Ramachandran, Prabhakar, Smith, Amanda and Hornby, Colin J (2019). Development of a multicentre automated model to reduce planning variability in radiotherapy of prostate cancer. Physics and Imaging in Radiation Oncology, 11, 34-40. doi: 10.1016/j.phro.2019.07.005

On the use of AAA and AcurosXB algorithms for three different stereotactic ablative body radiotherapy (SABR) techniques: Volumetric modulated arc therapy (VMAT), intensity modulated radiation therapy (IMRT) and 3D conformal radiotherapy (3D-CRT)

Tajaldeen, Abdulrahman, Ramachandran, Prabhakar, Alghamdi, Salem and Geso, Moshi (2019). On the use of AAA and AcurosXB algorithms for three different stereotactic ablative body radiotherapy (SABR) techniques: Volumetric modulated arc therapy (VMAT), intensity modulated radiation therapy (IMRT) and 3D conformal radiotherapy (3D-CRT). Reports of Practical Oncology and Radiotherapy, 24 (4), 399-408. doi: 10.1016/j.rpor.2019.02.008

Determination of dose enhancement caused by AuNPs with Xoft (R) Axxent (R) Electronic (eBx (TM)) and conventional brachytherapy: in vitro study

Shahhoseini, Elham, Ramachandran, Prabhakar, Patterson, William Roy and Geso, Moshi (2018). Determination of dose enhancement caused by AuNPs with Xoft (R) Axxent (R) Electronic (eBx (TM)) and conventional brachytherapy: in vitro study. International Journal of Nanomedicine, 13, 5733-5741. doi: 10.2147/IJN.S174624

Evaluation and performance of ArcCheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy

Ramachandran, Prabhakar, Tajaldeen, Abdulrahman, Taylor, David, Wanigaratne, Derrick, Roozen, Karl and Geso, Moshi (2017). Evaluation and performance of ArcCheck and film using gamma criteria in pre-treatment quality assurance of stereotactic ablative radiotherapy. Journal of Medical Physics, 42 (4), 251-257. doi: 10.4103/jmp.JMP_132_16

New era of electronic brachytherapy

Ramachandran, Prabhakar (2017). New era of electronic brachytherapy. World Journal of Radiology, 9 (4), 148-154. doi: 10.4329/wjr.v9.i4.148

Surface dose measurements in and out of field: Implications for breast radiotherapy with megavoltage photon beams

Lonski, Peta, Ramachandran, Prabhakar, Franich, Rick and Kron, Tomas (2017). Surface dose measurements in and out of field: Implications for breast radiotherapy with megavoltage photon beams. Zeitschrift Fur Medizinische Physik, 27 (4), 318-323. doi: 10.1016/j.zemedi.2017.05.002

Geographical miss of the prostate during image-guided radiotherapy with a 6-mm posterior expansion margin

Oates, Richard, Jones, Daryl, Foroudi, Farshad, Gill, Suki, Ramachandran, Prabhakar, Schneider, Michal, Lim Joon, Michael and Kron, Tomas (2016). Geographical miss of the prostate during image-guided radiotherapy with a 6-mm posterior expansion margin. Journal of medical radiation sciences, 64 (2), 97-105. doi: 10.1002/jmrs.186

Rectal complication probability from composite volumes derived from daily cone beam computed tomography in prostate cancer radiotherapy

Prabhakar, Ramachandran, Oates, Richard, Daryl, Jones, Chang, Joe, Geso, Moshi and Cramb, Jim (2016). Rectal complication probability from composite volumes derived from daily cone beam computed tomography in prostate cancer radiotherapy. Journal of Cancer Research and Therapeutics, 12 (1), 374-378. doi: 10.4103/0973-1482.174529

Automatic tracking of gold seed markers from CBCT image projections in lung and prostate radiotherapy

Gehrke, Christopher, Oates, Richard, Ramachandran, Prabhakar, Deloar, Hossain M., Gill, Suki and Kron, Tomas (2015). Automatic tracking of gold seed markers from CBCT image projections in lung and prostate radiotherapy. Physica Medica, 31 (2), 185-191. doi: 10.1016/j.ejmp.2015.01.002

A study on planning organ at risk volume for the rectum using cone beam computed tomography in the treatment of prostate cancer

Prabhakar, Ramachandran, Oates, Richard, Jones, Daryl, Kron, Tomas, Cramb, Jim, Foroudi, Farshad, Geso, Moshi and Gill, Suki (2014). A study on planning organ at risk volume for the rectum using cone beam computed tomography in the treatment of prostate cancer. Medical Dosimetry, 39 (1), 38-43. doi: 10.1016/j.meddos.2013.09.003

Real-time dosimetry in external beam radiation therapy

Prabhakar, Ramachandran (2013). Real-time dosimetry in external beam radiation therapy. World Journal of Radiology, 5 (10), 352-355. doi: 10.4329/wjr.v5.i10.352

Volumetric modulated arc therapy for prostate cancer patients with hip prosthesis

Prabhakar, Ramachandran, Kumar, Milind, Cheruliyil, Suja, Jayakumar, Silpa, Balasubramanian, Satheesan and Cramb, Jim (2013). Volumetric modulated arc therapy for prostate cancer patients with hip prosthesis. Reports of Practical Oncology and Radiotherapy, 18 (4), 209-213. doi: 10.1016/j.rpor.2013.03.006

A study of segment weight optimization with the CMS XiO step-and-shoot IMRT technique for prostate cancer

Prabhakar, Ramachandran, Cramb, Jim, Gehrke, Christopher, Anderson, Justin and Andrews, Judy (2012). A study of segment weight optimization with the CMS XiO step-and-shoot IMRT technique for prostate cancer. Journal of Applied Clinical Medical Physics, 13 (1), 205-214. doi: 10.1120/jacmp.v13i1.3622

Automatic verification of SSD and generation of respiratory signal with lasers in radiotherapy: A preliminary study

Prabhakar, Ramachandran (2012). Automatic verification of SSD and generation of respiratory signal with lasers in radiotherapy: A preliminary study. Physica Medica-European Journal of Medical Physics, 28 (1), 43-47. doi: 10.1016/j.ejmp.2011.02.002

A feasibility study of using couch-based real time dosimetric device in external beam radiotherapy

Prabhakar, Ramachandran, Cramb, Jim and Kron, Tomas (2011). A feasibility study of using couch-based real time dosimetric device in external beam radiotherapy. Medical Physics, 38 (12), 6539-6552. doi: 10.1118/1.3660773

A simple plan evaluation index based on the dose to critical structures in radiotherapy

Prabhakar, Ramachandran and Rath, Goura K. (2011). A simple plan evaluation index based on the dose to critical structures in radiotherapy. Journal of Medical Physics, 36 (4), 192-197. doi: 10.4103/0971-6203.89965

A study on the tumor volume computation between different 3D treatment planning systems in radiotherapy

Prabhakar, Ramachandran, Rath, Goura Kishor, Haresh, Kunhi Parambath, Manoharan, Nalliah, Laviraj, Macherla Anjaneyulu, Rajendran, Molaiyan and Julka, Pramod Kumar (2011). A study on the tumor volume computation between different 3D treatment planning systems in radiotherapy. Journal of Cancer Research and Therapeutics, 7 (2), 168-173. doi: 10.4103/0973-1482.82917

Unresectable basaloid squamous cell carcinoma of the trachea treated with concurrent chemoradiotherapy: A case report with review of literature

Joshi, Nikhil P., Haresh, Kunhi Parambath, Das, Prasenjit, Kumar, Rajender, Prabhakar, Ramachandran, Sharma, Daya Nand, Heera, Puthiyeduthu, Julka, Pramod Kumar and Rath, Goura Kishor (2010). Unresectable basaloid squamous cell carcinoma of the trachea treated with concurrent chemoradiotherapy: A case report with review of literature. Journal of Cancer Research and Therapeutics, 6 (3), 321-323. doi: 10.4103/0973-1482.73341

Dose volume uniformity index: a simple tool for treatment plan evaluation in brachytherapy

Prabhakar, Ramachandran (2010). Dose volume uniformity index: a simple tool for treatment plan evaluation in brachytherapy. Journal of Contemporary Brachytherapy, 2 (2), 71-75. doi: 10.5114/jcb.2010.14405

A study on the variation of bladder and rectal doses with respiration in intracavitary brachytherapy for cervix cancer

Prabhakar, Ramachandran, Jagadesan, Pandjatcharam, Haresh, Kunhi P., Karuna, Singh, Julka, Pramod Kumar and Rath, Goura Kishor (2010). A study on the variation of bladder and rectal doses with respiration in intracavitary brachytherapy for cervix cancer. Journal of Contemporary Brachytherapy, 2 (1), 24-27. doi: 10.5114/jcb.2010.13719

Impact of patient setup error in the treatment of head and neck cancer with intensity modulated radiation therapy

Prabhakar, Ramachandran, Laviraj, Macherla A., Haresh, Kunhi Parambath, Julka, Pramod K. and Rath, Goura K. (2010). Impact of patient setup error in the treatment of head and neck cancer with intensity modulated radiation therapy. Physica Medica, 26 (1), 26-33. doi: 10.1016/j.ejmp.2009.05.001

A technique for verification of isocenter position in tangential field breast irradiation

Prabhakar, Ramachandran, Pande, Manish, Harsh, Kumar, Julk, Pramod K., Ganesh, Tharmar and Rath, Goura K. (2009). A technique for verification of isocenter position in tangential field breast irradiation. Medical Dosimetry, 34 (1), 16-19. doi: 10.1016/j.meddos.2007.07.002

Impact of different CT slice thickness on clinical target volume for 3D conformal radiation therapy

Prabhakar, Ramachandran, Ganesh, Tharmar, Rath, Goura K., Julka, Pramod K., Sridhar, Pappiah S., Joshi, Rakesh C. and Thulkar, Sanjay (2009). Impact of different CT slice thickness on clinical target volume for 3D conformal radiation therapy. Medical Dosimetry, 34 (1), 36-41. doi: 10.1016/j.meddos.2007.09.002

Adenoid cystic carcinoma of the trachea treated with PET-CT based intensity modulated radiotherapy

Haresh, Kunhi Parambath, Prabhakar, Ramachandran, Rath, Goura K., Sharma, Daya Nand, Julka, Pramod K. and Subramani, V. (2008). Adenoid cystic carcinoma of the trachea treated with PET-CT based intensity modulated radiotherapy. Journal of Thoracic Oncology, 3 (7), 793-795. doi: 10.1097/JTO.0b013e31817c9245

Granulocytic sarcoma masquerading as Ewings sarcoma: A diagnostic dilemma

Haresh, Kunhi Parambath, Joshi, Nikhil, Gupta, Chaitali, Prabhakar, Ramachandran, Sharma, Daya Nand, Julka, Pramod Kumar and Rath, Goura Kishor (2008). Granulocytic sarcoma masquerading as Ewings sarcoma: A diagnostic dilemma. Journal of Cancer Research and Therapeutics, 4 (3), 137-139. doi: 10.4103/0973-1482.43150

Simulation of dose to surrounding normal structures in tangential breast radiotherapy due to setup error

Prabhakar, Ramachandran, Rath, Goura K., Julka, Pramod K., Ganesh, Tharmar, Haresh, K. P., Joshi, Rakesh C., Senthamizhchelvan, S., Thulkar, Sanjay and Pant, G. S. (2008). Simulation of dose to surrounding normal structures in tangential breast radiotherapy due to setup error. Medical Dosimetry, 33 (1), 81-85. doi: 10.1016/j.meddos.2007.03.003

Execution of mantle field with multileaf collimator: A simple approach

Prabhakar, Ramachandran, Haresh, Parambath P., Sridhar, Pappiah S., Laviraj, Macharla A., Julka, Pramod K. and Rath, Goura K. (2008). Execution of mantle field with multileaf collimator: A simple approach. Journal of Cancer Research and Therapeutics, 4 (1), 18-20. doi: 10.4103/0973-1482.39600

Impact of different breathing conditions on the dose to surrounding normal structures in tangential field breast radiotherapy

Prabhakar, Ramachandran, Tharmar, Ganesh, Julka, Pramod K., Rath, Goura K., Joshi, Rakesh C., Bansal, Anil K., Bisht, R. K., Gopishankar, N., Pant, G. S. and Thulkar, S. (2007). Impact of different breathing conditions on the dose to surrounding normal structures in tangential field breast radiotherapy. Journal of Medical Physics, 32 (1), 24-28. doi: 10.4103/0971-6203.31146

Radiation injury to the spinal cord in head and neck cancers: Does field arrangement have a role

Anusheel, Munshi, Prabhakar, Ramachandran and Mohanti, Bidhu (2006). Radiation injury to the spinal cord in head and neck cancers: Does field arrangement have a role. Journal of Cancer Research and Therapeutics, 2 (2), 65-67. doi: 10.4103/0973-1482.25852

Machine learning to predict local failure in melanoma brain metastases treated with radiosurgery

Shanker, M., Ramachandran, P., Motley, R., Huo, M., Foote, M. and Pinkham, M. (2023). Machine learning to predict local failure in melanoma brain metastases treated with radiosurgery. ESTRO 2023, Vienna, Austria, 13 - 16 May 2023. Shannon, Ireland: Elsevier. doi: 10.1016/s0167-8140(23)67001-x