Rex Cheung
University of Texas MD Anderson Cancer Center
Clonogenic assayCancerInternal medicineRadiologyUrologySurgeryUltrasoundOncologyTomographyImage registrationRadiation treatment planningExternal beam radiotherapyBiopsyProstateHormonal therapyProstatectomyProstate cancerRectumProstate-specific antigenIntensity-modulated radiation therapyPSA FailureNuclear medicineMedical imagingConfidence intervalCancer researchProportional hazards modelRadiation therapyMedicine
58Publications
22H-index
2,225Citations
Publications 58
Newest
2 CitationsSource
#1Christopher Brooks (University of Texas MD Anderson Cancer Center)H-Index: 15
#2Rex Cheung (University of Texas MD Anderson Cancer Center)H-Index: 22
Last. Rajat J. Kudchadker (University of Texas MD Anderson Cancer Center)H-Index: 24
view all 3 authors...
Abstract Megavoltage photon intensity-modulated radiation therapy (IMRT) is typically used in the treatment of prostate cancer at our institution. Approximately 1% to 2% of patients with prostate cancer have hip prostheses. The presence of the prosthesis usually complicates the planning process because of dose perturbation around the prosthesis, radiation attenuation through the prosthesis, and the introduction of computed tomography artifacts in the planning volume. In addition, hip prostheses ...
12 CitationsSource
#1Quynh-Nhu Nguyen (University of Texas MD Anderson Cancer Center)H-Index: 9
#2Lawrence B. Levy (University of Texas MD Anderson Cancer Center)H-Index: 30
Last. Deborah A. Kuban (University of Texas MD Anderson Cancer Center)H-Index: 71
view all 7 authors...
Source
#1Seungtaek Choi (University of Texas MD Anderson Cancer Center)H-Index: 18
#2Jeffrey Johnson (University of Texas MD Anderson Cancer Center)H-Index: 4
Last. Deborah A. Kuban (University of Texas MD Anderson Cancer Center)H-Index: 71
view all 9 authors...
Source
#1Yasemin Bolukbasi (University of Texas MD Anderson Cancer Center)H-Index: 9
#2Lawrence B. Levy (University of Texas MD Anderson Cancer Center)H-Index: 30
Last. Deborah A. Kuban (University of Texas MD Anderson Cancer Center)H-Index: 71
view all 8 authors...
Source
#1Steven J. FrankH-Index: 58
#2Rajat J. KudchadkerH-Index: 24
Last. Lei DongH-Index: 73
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Purpose: The purpose of this study was to evaluate the volumetric changes of the prostate and seminal vesicles (SV) during a definitive course of intensity-modulated radiation therapy using a combined computed tomography (CT)-linear accelerator system. Methods and Materials: Fifteen patients were enrolled in this IRB-approved prospective study. The treatment plan was designed to deliver a total dose of 75.6 Gy over 42 fractions to 98% of the planning target volume. In-room CT scans were acquired...
8 CitationsSource
#1Steven J. Frank (University of Texas MD Anderson Cancer Center)H-Index: 58
#2Lei Dong (University of Texas MD Anderson Cancer Center)H-Index: 73
Last. Deborah A. Kuban (University of Texas MD Anderson Cancer Center)H-Index: 71
view all 11 authors...
Purpose To quantify the interfraction variability in prostate and seminal vesicle (SV) positions during a course of intensity-modulated radiotherapy (IMRT) using an integrated computed tomography (CT)–linear accelerator system and to assess the impact of rectal and bladder volume changes. Methods and Materials We studied 15 patients who had undergone IMRT for prostate carcinoma. Patients had one pretreatment planning CT scan followed by three in-room CT scans per week using a CT-on-rails system....
70 CitationsSource
#1A Melancon (University of Texas at Austin)H-Index: 6
#2Jennifer O'Daniel (University of Texas MD Anderson Cancer Center)H-Index: 20
Last. Lei Dong (University of Texas MD Anderson Cancer Center)H-Index: 73
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Purpose To determine whether a 3-mm isotropic target margin adequately covers the prostate and seminal vesicles (SVs) during administration of an intensity-modulated radiation therapy (IMRT) treatment fraction, assuming that daily image-guided setup is performed just before each fraction.
36 CitationsSource
#1Jennifer O'Daniel (University of Texas MD Anderson Cancer Center)H-Index: 20
#2Lei Dong (University of Texas MD Anderson Cancer Center)H-Index: 73
Last. Radhe Mohan (University of Texas MD Anderson Cancer Center)H-Index: 115
view all 11 authors...
Purpose To compare the effectiveness of daily ultrasound (US)- and computed tomography (CT)-guided alignments with an off-line correction protocol using daily bone alignment plus a correction factor for systematic internal prostate displacement (CF ID ). Methods and Materials Ten prostate cancer patients underwent CT scans three times weekly using an integrated CT-linear accelerator system, followed by alignment using US for daily radiotherapy. Intensity-modulated radiotherapy plans were designe...
3 CitationsSource
#1Renaud de Crevoisier (University of Texas MD Anderson Cancer Center)H-Index: 28
#2A Melancon (University of Texas at Austin)H-Index: 6
Last. Lei Dong (University of Texas MD Anderson Cancer Center)H-Index: 73
view all 11 authors...
Purpose: To quantify the three-dimensional variations of pelvic anatomy after a single treatment fraction. Methods and Materials: Forty-six prostate cancer patients underwent computed tomography (CT) scanning with an in-room CT-on-rail system, before and immediately after one intensity-modulated radiotherapy (IMRT) session. To study the soft-tissue anatomy changes, the pre- and post-treatment CT images were registered using the bony structure with an in-house image registration software system. ...
37 CitationsSource