| Definition in (radio-) oncology . | Definition . | No. of STAR studies reporting the volume . | Volumes treated (if provided) . | Remarks relevant for STAR . |
|---|---|---|---|---|
| Gross target volume (GTV) | The demonstrable extent of tumour extension and location. GTV and target volume (TV) can be used interchangeable. | 7 | Median 25.1 mL Range 6.4–88.6 mL | To date, no image or mapping technique can accurately delineate the extent of VT substrates. |
| Clinical target volume (CTV) | Considers a volume of tissue containing subclinical malignant disease, with a certain probability of occurrence relevant to the selected therapy. | 5 | Median 34.6 mL Range 6.75–108.7 mL | For STAR, there is no equivalent. It is advised to avoid any functioning myocardium. |
| Internal target volume (ITV) | CTV plus a safety margin that considers uncertainties in the size, shape, and position of the CTV within the patient. | 12 | N.A. | It is advised to use approaches with advanced motion management to minimize the ITV. |
| Planning target volume (PTV) | A geometric concept introduced for treatment planning and evaluation. In the ICRU definition, the PTV is a margin around the CTV, taking into account the patient's internal and setup uncertainties. | 11 | Median 81.2 Range 3.5–345.1 mL | For STAR different margins ranging between 5 and 10 mm have been used. |
| Definition in (radio-) oncology . | Definition . | No. of STAR studies reporting the volume . | Volumes treated (if provided) . | Remarks relevant for STAR . |
|---|---|---|---|---|
| Gross target volume (GTV) | The demonstrable extent of tumour extension and location. GTV and target volume (TV) can be used interchangeable. | 7 | Median 25.1 mL Range 6.4–88.6 mL | To date, no image or mapping technique can accurately delineate the extent of VT substrates. |
| Clinical target volume (CTV) | Considers a volume of tissue containing subclinical malignant disease, with a certain probability of occurrence relevant to the selected therapy. | 5 | Median 34.6 mL Range 6.75–108.7 mL | For STAR, there is no equivalent. It is advised to avoid any functioning myocardium. |
| Internal target volume (ITV) | CTV plus a safety margin that considers uncertainties in the size, shape, and position of the CTV within the patient. | 12 | N.A. | It is advised to use approaches with advanced motion management to minimize the ITV. |
| Planning target volume (PTV) | A geometric concept introduced for treatment planning and evaluation. In the ICRU definition, the PTV is a margin around the CTV, taking into account the patient's internal and setup uncertainties. | 11 | Median 81.2 Range 3.5–345.1 mL | For STAR different margins ranging between 5 and 10 mm have been used. |
| Definition in (radio-) oncology . | Definition . | No. of STAR studies reporting the volume . | Volumes treated (if provided) . | Remarks relevant for STAR . |
|---|---|---|---|---|
| Gross target volume (GTV) | The demonstrable extent of tumour extension and location. GTV and target volume (TV) can be used interchangeable. | 7 | Median 25.1 mL Range 6.4–88.6 mL | To date, no image or mapping technique can accurately delineate the extent of VT substrates. |
| Clinical target volume (CTV) | Considers a volume of tissue containing subclinical malignant disease, with a certain probability of occurrence relevant to the selected therapy. | 5 | Median 34.6 mL Range 6.75–108.7 mL | For STAR, there is no equivalent. It is advised to avoid any functioning myocardium. |
| Internal target volume (ITV) | CTV plus a safety margin that considers uncertainties in the size, shape, and position of the CTV within the patient. | 12 | N.A. | It is advised to use approaches with advanced motion management to minimize the ITV. |
| Planning target volume (PTV) | A geometric concept introduced for treatment planning and evaluation. In the ICRU definition, the PTV is a margin around the CTV, taking into account the patient's internal and setup uncertainties. | 11 | Median 81.2 Range 3.5–345.1 mL | For STAR different margins ranging between 5 and 10 mm have been used. |
| Definition in (radio-) oncology . | Definition . | No. of STAR studies reporting the volume . | Volumes treated (if provided) . | Remarks relevant for STAR . |
|---|---|---|---|---|
| Gross target volume (GTV) | The demonstrable extent of tumour extension and location. GTV and target volume (TV) can be used interchangeable. | 7 | Median 25.1 mL Range 6.4–88.6 mL | To date, no image or mapping technique can accurately delineate the extent of VT substrates. |
| Clinical target volume (CTV) | Considers a volume of tissue containing subclinical malignant disease, with a certain probability of occurrence relevant to the selected therapy. | 5 | Median 34.6 mL Range 6.75–108.7 mL | For STAR, there is no equivalent. It is advised to avoid any functioning myocardium. |
| Internal target volume (ITV) | CTV plus a safety margin that considers uncertainties in the size, shape, and position of the CTV within the patient. | 12 | N.A. | It is advised to use approaches with advanced motion management to minimize the ITV. |
| Planning target volume (PTV) | A geometric concept introduced for treatment planning and evaluation. In the ICRU definition, the PTV is a margin around the CTV, taking into account the patient's internal and setup uncertainties. | 11 | Median 81.2 Range 3.5–345.1 mL | For STAR different margins ranging between 5 and 10 mm have been used. |
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