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Displacement of the silver clips in surgical cavity based on four-dimensional CT images for patients undertaking external-beam partial breast irradiation after breast-conserving surgery


, : Displacement of the silver clips in surgical cavity based on four-dimensional CT images for patients undertaking external-beam partial breast irradiation after breast-conserving surgery. Zhonghua Zhong Liu Za Zhi 34(3): 201-204

To explore the displacement of the selected clips and the center of the geometry consisted of all the clips in the surgical cavity measured on the basis of four-dimensional computed tomography (4D-CT) simulation images. Fourteen breast cancer patients after breast-conserving surgery were recruited for external beam partial-breast irradiation (EB-PBI), and received large aperture CT simulation. The 4D-CT image data sets were collected when the patient was in the free breathing state. Using the Varian Eclipse treatment planning system, the selected four clips in the cavity were separately delineated on the CT images from 10 phases of the breath cycle, and all of the clips in the cavity were marked to obtain the geometry. Then the displacement of the four selected clips and the center of the geometry in the left-right (LR), anterior-posterior (AP), and superior-inferior (SI) directions were measured. The differences of the displacement were compared. The displacements in the AP and SI directions were always greater than the displacement in LR direction for the same selected clip. The difference of the displacements in the same direction of the different selected clips was not statistically significant (P>0.05). The displacements of the geometry center consisted of all of the clips in the LR, AP, SI directions were (1.34±0.39) mm, (2.01±1.02) mm and (1.89±1.03) mm, respectively, and the difference of the displacements between LR and AP, LR and SI were all statistically significant (P<0.05). In the same directions (LR, AP and SI), the displacement of geometry center was always greater than the displacement of the selected clips, and the difference except SI direction was all statistically significant (P<0.05). In the SI direction, the association between the displacement of geometry center and the upper clip, geometry center and the lower clip was statistically significant (P<0.05). When the target for EB-PBI is defined on the basis of 4D-CT simulation images, the displacement of the selected clips at the border of the surgical cavity is not qualified to substitute the displacement of the target defined basing on all of the clips in the surgical cavity.

US$29.90

PMID: 22780974


Other references

Pottel, H.; Mottaghy, F.M.; Zaman, Z.; Martens, F., 2010: On the relationship between glomerular filtration rate and serum creatinine in children. The Schwartz formula (eGFR = kL/Scr, with k = 0.55) to determine the estimated glomerular filtration rate (eGFR) in children with chronic kidney disease (CKD), based on length (L) and serum creatinine (Scr) has recently been updated for enzymatic...

Burrell, A.; Henningsen, A., 2001: An empirical investigation of the demand for bananas in Germany. The article uses econometric methods to assess consumer demand for bananas and for fruit generally in Germany, concentrating on monthly household consumption figures for 1986 to 1998. Most previous studies have concentrated on the supply side. Ger...

Newton, I.; White, C.M.Reviewer, 1987: The sparrowhawk (book review). The Auk 104: 4-5

Kumar C.V.R.K.; Rao R.; Raghavan R.S.; Gaffar A.A., 1991: Therapy of exocrine pancreatic insufficiency in canines. Indian Veterinary Journal 68(5): 480

Mcgonnell, Imelda M., 2001: The evolution of the pectoral girdle. The pectoral girdle articulates the forelimb with the axial skeleton in all vertebrates with paired anterior appendages. The structure of the pectoral girdle and its position along the axial skeleton has changed significantly during vertebrate evo...

Manninen P.; Knill R.L., 1979: Cardio vascular signs of acute hypoxemia and hypercarbia during enflurane and halothane anesthesia in man. The impact of enflurane and halothane (1.1 MAC [minimum anesthetic concentrating]) on heart rate and blood pressure responses to experimental hypoxemia (PETO2 [end-tidal O2 tension] 6.0 kPa [45 torr]) and small increments in PCO2 [CO2 partial pres...

Chaudhuri, A.A.; Binkley, M.S.; Aggarwal, S.; Qian, Y.; Carter, J.N.; Shah, R.; Loo, B.W., 2016: Severe Chest Wall Toxicity From Cryoablation in the Setting of Prior Stereotactic Ablative Radiotherapy. We present the case of a 42-year-old woman with metastatic synovial sarcoma of parotid origin, treated definitively with chemoradiation, who subsequently developed oligometastatic disease limited to the lungs. She underwent multiple left and right...

Smith, K.J.; Mohn, K.; Pinevich, A.J.; Nasca, T.J., 1996: Residency requirements for scholarly activity. Academic Medicine 71(3): 214-214

Hvichia, G.E.; Parveen, Z.; Wagner, C.; Janning, M.; Quidde, J.; Stein, A.; Müller, V.; Loges, S.; Neves, R.P.L.; Stoecklein, N.H.; Wikman, H.; Riethdorf, S.; Pantel, K.; Gorges, T.M., 2016: A novel microfluidic platform for size and deformability based separation and the subsequent molecular characterization of viable circulating tumor cells. Circulating tumor cells (CTCs) were introduced as biomarkers more than 10 years ago, but capture of viable CTCs at high purity from peripheral blood of cancer patients is still a major technical challenge. Here, we report a novel microfluidic plat...

Merriam, C.W., 1974: Lower and Lower Middle Devonian rugose corals of the central Great Basin. Geological Survey Professional Paper, 805: 1-83