target volume
Target volume and position variations during intensity-modulated radiotherapy for patients with nasopharyngeal carcinoma
... tumor volume (GTV) and elective clinical target volume (CTV) were manually delineated on each axial CT ...modifications. Volume loss, system and random errors, and the mean and three- ...
10
Utility of Multimodality Imaging Based Target Volume Definition for Radiosurgery of Trigeminal Neuralgia: An Original Article
... truth target volume to be used as the reference was defined by the board-certified treating physicians after comprehensive evaluation and ...of target volumes and critical structures. Target ...
5
Is internal target volume accurate for dose evaluation in lung cancer stereotactic body radiotherapy?
... planning target on average projection (AVG) ...real target dose by endpoints of D 99 , D 95 , D 1 (doses received by the 99%, 95% and 1% of the target volume), and dose coverage endpoint of V ...
8
Enhanced Protocols for CT Slice Thickness on Clinical Target Volume for 3d Radiation Therapy
... of volume has a crucial role, it is more sensitive to uncertainties of geometric because organs at risk and sharper dose gradients at the target ...the target definition importance. For the ...
6
Patterns of regional nodal relapse after D2 lymphadenectomy in gastric cancer: rethinking the target volume
... volume’s definition in gastric cancer. With the development of surgical techniques and radiotherapy, the guidelines based on recurrence patterns over the past few decades no longer apply. However, a detailed guideline ...
10
Standardisation of Target Volume Delineation for Carotid-sparing Intensity-modulated Radiotherapy in Early Glottis Cancer.
... This review highlights a lack of consensus in target volume definitions. As field sizes get smaller with carotid-sparing techniques, it is even more important to ensure the tumour is always encompassed ...
22
Postoperative radiation in esophageal squamous cell carcinoma and target volume delineation
... In summary, multiple factors, such as tumor location, POCT, and TNM stage, influence postoperative recurrence in ESCC. Although the results from various studies are inconsistent, they can still provide insight into ...
10
High dose and compartmental target volume may improve patient outcome after radiotherapy for pelvic bone metastases from hepatocellular carcinoma
... Metastatic lesions are typically osteolytic, although sclerotic lesions can be encountered from primary tumors such as prostate or breast carcinoma.[19] He et al. reported that purely osteolytic lesions were present in ...
9
DELINEATION OF TARGET VOLUME FOR BRAIN TUMORS IN RADIOTHERAPY USING ACTIVE CONTOUR SEGMENTATION AND SIMPSON INTEGRATION
... [3] Aslian, H., Mahdi, S., Seied, R.M., Farshid, B., M., Mahdi, A., Navid, K., and Pedram, F., 2013, Magnetic Resonance Imaging-Based Target Volume Delineation in Radiation Therapy Treatment Planning for ...
9
Calculation of optimal margins between clinical target volume (ctv) and planning target volume (ptv)
... The CTV still requires a further margin in order to account for daily setup error and internal organ motion. This volume is termed the planning target volume, PTV (ICRU report, 1993). The purpose of ...
7
Target Volume Analysis of Vaccinia Virus: Influence of Virus Dispersion and Noninfectious Particles
... Target Volume Analysis of Vaccinia Virus: Influence of Virus Dispersion and Noninfectious Particles GUILLERMO CONTRERAS AND ADELA OHLBAUM Department of Virology, Faculty of Medicine, ani[r] ...
5
Dosimetric Comparison of Different Prescription Modes in Lung Stereotactic Body Radiation Therapy
... mended methods of dose prescription have been changed from prescription at the isocenter point of the treatment plan (IC prescription) to prescription at the periphery of the planning target volume (PTV) ...
6
Comparative Study between Field in Field and IMRT Techniques in Prostate Cancer Radiotherapy: A Treatment Planning Study
... gross target volume (GTV), clinical target volume (CTV), and planning target volume (PTV) [11] as well as Organs at Risk (OARs) had been delineated by the physician on each axial ...
8
Identifying the optimal criteria of radiotherapeutic parameters for patients with unresectable locally advanced hepatocellular carcinoma
... tumor volume enhanced in the arterial phase and diluted in the delayed phase of the CT ...internal target volume in order to compensate for respiration-induced liver movement due to the installation ...
8
A dosimetric comparison of different treatment plans of palliative spinal bone irradiation: analysis of dose coverage with respect to ICRU 50 report
... Methods: Forty-five simulation CT scans of 39 patients previously treated for thoraco-lumbar spinal bone metastases were used. Three different treatment plans were created: (1) single posterior field plans using the ICRU ...
7
Efficacy of Postoperative Radiotherapy Using Modern Techniques in Patients with Retroperitoneal Soft Tissue Sarcoma
... could also be less extensive than if surgery was performed af- ter RT. However, we have to consider that radiation beam ar- rangement prior to the development of 3D-CRT consisted of AP/PA beam, such that PORT contained a ...
8
A CT method for following patients with both prosthetic replacement and implanted tantalum beads: preliminary analysis with a pelvic model and in seven patients
... 3D volume fusion (spatial registration) tool [7, 15, ...a target volume with a reference volume via a variety of 3D transform modules, ranging from a simple rigid body to 3D warping and to ...
12
Low incidence of new biochemical and clinical hypogonadism following hypofractionated stereotactic body radiation therapy (SBRT) monotherapy for low- to intermediate-risk prostate cancer
... The volume of the PTV receiving ...Rectal volume receiving 36 Gy was limited to < 1 cc. The rectal dose- volume histogram (DVH) goals were < 50% rectal volume receiving 50% of the ...
9
Combination of FDG-PET and FMISO-PET as a treatment strategy for patients undergoing early-stage NSCLC stereotactic radiotherapy
... tumor volume (GTV) was contoured in axial CT images. The clinical target volume (CTV) was consid- ered to be equal to the ...internal target volume (ITV) was three-dimensionally defined ...
10
Impact of Neuroradiology Based Peer Review on Head and Neck Radiotherapy Target Delineation
... bony/cartilaginous target volume alteration most frequently involved the inclusion or exclusion of branches of the trigeminal and facial cranial nerves and skull base perineural invasion, such as minor ...
8