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Higby, C., Y. Khafaga, M. Al-Shabanah, A. Mousa, M. Ilyas, G. Nazer, and E. H. A. B. M. KHALIL, "Volumetric-modulated arc therapy (VMAT) versus 3D-conformal radiation therapy in supra-diaphragmatic Hodgkin's Lymphoma with mediastinal involvement: A dosimetric comparison.", Journal of the Egyptian National Cancer Institute, vol. 28, issue 3, pp. 163-8, 2016 Sep. Abstract

PURPOSE: To compare volumetric-modulated arc therapy (VMAT) with 3D-conformal radiation therapy (3D-CRT) mediastinal irradiation for stage I-II supra-diaphragmatic Hodgkin's Lymphoma (HL).

PATIENTS AND METHODS: Eleven patients were planned for RT after 4-6 cycles of ABVD chemotherapy: conventional 3D-CRT (AP/PA) and VMAT plans were conformed to the same PTV. Objective was to choose the best PTV coverage plan with the least OAR dose. The 2 plans were compared for: PTV coverage, mean dose and V5,V20lung, mean dose and V30heart, V5, V10, V15breast (female patients), and the integral body dose.

RESULTS: Both techniques achieved adequate PTV coverage. Mean lung and heart dose was consistently lower in VMAT plans. The lung V20 dose was acceptable for VMAT, but exceeded the tolerance threshold in 6 cases with 3DCRT plans. A mean difference of 15.9% for both lungs V20 favored VMAT plans; average MLD difference was 2.3Gy less for VMAT plans. Similarly, lower maximum and mean heart doses with a 3.3Gy dose reduction and a 9.4% difference in V30 favored VMAT plans. Mean V5lung/female breast and integral dose were invariably higher in VMAT plans because of the low-dose spread.

CONCLUSIONS: VMAT is a valuable technique for treatment of large mediastinal HL. VMAT spares the lung and heart compared to 3DCRT using ISRT in select HL cases. VMAT allows dose escalation for post-chemotherapy residual disease with minimal dose to OARs. VMAT low radiation dose (V5) to the normal tissues, and the increased integral dose should be considered.

Wolff, D., F. Stieler, G. Welzel, F. Lorenz, Y. Abo-Madyan, S. Mai, C. Herskind, M. Polednik, V. Steil, F. Wenz, et al., "Volumetric modulated arc therapy (VMAT) vs. serial tomotherapy, step-and-shoot IMRT and 3D-conformal RT for treatment of prostate cancer", Radiotherapy and Oncology, vol. 93, no. 2: Elsevier, pp. 226–233, 2009. AbstractWebsite


Volumetric modulated arc therapy (VMAT), a complex treatment strategy for intensity-modulated radiation therapy, may increase treatment efficiency and has recently been established clinically. This analysis compares VMAT against established IMRT and 3D-conformal radiation therapy (3D-CRT) delivery techniques.

Based on CT datasets of 9 patients treated for prostate cancer step-and-shoot IMRT, serial tomotherapy (MIMiC), 3D-CRT and VMAT were compared with regard to plan quality and treatment efficiency. Two VMAT approaches (one rotation (VMAT1x) and one rotation plus a second 200° rotation (VMAT2x)) were calculated for the plan comparison. Plan quality was assessed by calculating homogeneity and conformity index (HI and CI), dose to normal tissue (non-target) and D95% (dose encompassing 95% of the target volume). For plan efficiency evaluation, treatment time and number of monitor units (MU) were considered.

For MIMiC/IMRTMLC/VMAT2x/VMAT1x/3D-CRT, mean CI was 1.5/1.23/1.45/1.51/1.46 and HI was 1.19/1.1/1.09/1.11/1.04. For a prescribed dose of 76 Gy, mean doses to organs-at-risk (OAR) were 50.69 Gy/53.99 Gy/60.29 Gy/61.59 Gy/66.33 Gy for the anterior half of the rectum and 31.85 Gy/34.89 Gy/38.75 Gy/38.57 Gy/55.43 Gy for the posterior rectum. Volumes of non-target normal tissue receiving ⩾70% of prescribed dose (53 Gy) were 337 ml/284 ml/482 ml/505 ml/414 ml, for ⩾ 50% (38 Gy) 869 ml/933 ml/1155 ml/1231 ml/1993 ml and for ⩾ 30% (23 Gy) 2819 ml/3414 ml/3340 ml/3438 ml /3061 ml. D95% was 69.79 Gy/70.51 Gy/71,7 Gy/71.59 Gy/73.42 Gy. Mean treatment time was 12 min/6 min/3.7 min/1.8 min/2.5 min.

All approaches yield treatment plans of improved quality when compared to 3D-conformal treatments, with serial tomotherapy providing best OAR sparing and VMAT being the most efficient treatment option in our comparison. Plans which were calculated with 3D-CRT provided good target coverage but resulted in higher dose to the rectum.

Volumetric modulated arc therapy (VMAT);
Intensity-modulated radiotherapy (IMRT);
Sequential tomotherapy;
Prostate cancern/a

Wolff, D., F. Stieler, Y. Abo-Madyan, M. Polednik, V. Steil, S. Mai, F. Wenz, and F. Lohr, "Volumetric intensity modulated arc therapy (VMAT) vs. serial tomotherapy and segmental (step and shoot) IMRT for treatment of prostate cancer", International Journal of Radiation Oncology* Biology* Physics, vol. 72, no. 1: Elsevier, pp. S562, 2008. Abstract
Nada, R. M., B. van Loon, J.G.Schols, T. J. Maal, Y. A. Mostafa, and A. M. Kuijpers-Jagtman, "Volumetric changes of the nose and nasal airway 2 years after tooth-borne and bone-borne surgically assisted rapid maxillary expansion.", Eur J Oral Sci, vol. 121, issue 5, pp. 450-456, 2013. Abstract

This study aimed to assess the effects of bone-borne and tooth-borne surgically assisted rapid maxillary expansion on the volumes of the nose and nasal airway 2 yr after maxillary expansion. This prospective cohort study included 32 patients with transverse maxillary hypoplasia. Expansion was performed with a tooth-borne distractor (Hyrax) in 19 patients and with a bone-borne distractor [transpalatal distractor (TPD)] in the remaining 13. Cone beam computed tomography scans and three-dimensional (3D) photographs of the face were acquired before treatment and 22 ± 7 months later, and were used to evaluate the volumes of the nose and nasal airway. Nasal volume increased by 1.01 ± 1.6% in the Hyrax group and by 2.39 ± 2.4% in the TPD group. Nasal airway volume increased by 9.7 ± 5.6% in the Hyrax group and by 12.9 ± 12.7% in the TPD group. Changes in the nasal volume and in the nasal airway volume between the pre- and post-treatment measurements were statistically significant, whereas differences between the treatment groups were not; 22 months after surgically assisted rapid maxillary expansion, the increases in the nasal volume and in the nasal airway volume were comparable between tooth-borne and bone-borne devices.

© 2013 Eur J Oral Sci.

Y.M. Salman, A. M. Badawi, A. S. M. A. M. A., "Volumetric calculations of segmented brain tumor", Proceedings of 2nd Cairo international biomedical engineering conference (CIBEC04), 2004. Abstract
El-Shehaby, A. M. N., W. A. Reda, K. M. Abdel Karim, R. M. Emad Eldin, A. M. Nabeel, and S. R. Tawadros, "Volume-Staged Gamma Knife Radiosurgery for Large Brain Arteriovenous Malformation.", World neurosurgery, vol. 132, pp. e604-e612, 2019. Abstract

OBJECTIVE: Large brain arteriovenous malformations (AVMs) pose a management dilemma because of the limited success of any single treatment modality by itself. Surgery alone is associated with significant morbidity and mortality. Similarly, embolization alone has limited efficacy. Volume-staged Gamma Knife radiosurgery (VSGR) has been developed for the treatment of large AVMs to increase the efficacy and improve safety of treatment of these lesions. The aim of this study was to assess the efficacy and safety of VSGR technique for the treatment of large brain AVMs.

METHODS: The study included patients treated by VSGR between May 2009 and July 2015. All patients had large AVMs (>10 mL). There were 29 patients.

RESULTS: Twenty-four patients completed radiographic follow-up, with 15 obliteration cases (62.5%). A total of 56 sessions were performed. The mean AVM volume was 16 mL (range, 10.1-29.3 mL). The mean prescription dose was 18 Gy (range, 14-22 Gy). The mean follow-up duration was 43 months (range, 21-73 months). One patient died during follow-up of an unrelated cause. Two patients had hemorrhage during follow-up. Symptomatic edema developed in 5 patients (17%). The factors affecting obliteration were smaller total volume, higher dose/stage, nondeep location, compact AVM, AVM score <3, >18 Gy dose, and <15 mL total volume. The factors affecting symptomatic edema were smaller total volume and shorter time between first and last sessions (P = 0.012). T2 image changes were affected by Spetzler-Martin grade ≥3 (P = 0.013) and AVM score ≥3 (P = 0.014).

CONCLUSIONS: VSGR provides an effective and safe treatment option for large brain AVMs. Smaller AVM volume is associated with higher obliteration rate.

H.O, A., H. M, and A. A, "Volume Preload versus Ephedrine Infusion for Prevention of Hypotension Due to Spinal Anesthesia for Cesarean Section", Open Journal of Anesthesiology, vol. 6, issue 2, pp. 37-44, 2016. 1-_ojanes_ephedrine.pdf
A.Y.Abul-Magd, M.H.Simbel, and M.Y.H.Farag, "Volume integrals and root - mean - square radii of the optical potential", Canadian Journal of Physics, vol. 58, pp. 1230, 1980.
Ghallab, M. A., M. E. M. Batanouny, A. A. Abd-Elhady, and I. M. Youssef, "Volume Incentive Spirometer is more Effective than Flow Incentive Spirometer on Arterial Blood Gases in Patients with Pneumonia", Journal of Cardiovascular Disease Research, vol. 12, issue 6, pp. 102-110, 2021. dr_esraa.pdf
Hossam Moftah, Walaa Elmasry, N. Ghali, A. E. Hassanien, and M. Showman, "Volume Identification and Estimation of MRI Brain Tumor.", The IEEE International Conference on Hybrid Intelligent Systems (HIS2012)., Pune. India, 4-7 Dec. 2012, , pp. 120 - 124, 2012. Abstract

This paper deals with two dimensional magnetic resonance imaging (MRI) sequence of brain slices which include many objects to identify and estimate the volume of the brain tumors. More than twenty five features based on shape, color and texture was extracted to obtain feature vector for each object to characterize the tumor and identify it. Experimental results show that the accuracy of the estimation of tissue volumes is very high.

Moftah, H. M., N. Ghali, A. E. Hassanien, M. A. Ismail, and others, "Volume identification and estimation of MRI brain tumor", Hybrid Intelligent Systems (HIS), 2012 12th International Conference on: IEEE, pp. 120–124, 2012. Abstract
Moftah, H. M., N. I. Ghali, A. E. Hassanien, and M. A. Ismail, "Volume identification and estimation of MRI brain tumor", Hybrid Intelligent Systems (HIS), 2012 12th International Conference on: IEEE, pp. 120–124, 2012. Abstract
Faessler, A. a, and M. b Ismail, "The volume contribution of the ion-ion optical potential from realistic complex nucleon-nucleon interaction", Zeitschrift für Physik A Atoms and Nuclei, vol. 316, no. 2, pp. 195-199, 1984. AbstractWebsite

The real and imaginary parts of the optical model potential for several pairs of magic nuclei have been calculated by a double folding procedure. The complex effective interaction is calculated from the Reid soft core potential by solving the Bethe-Goldstone equation in two colliding nuclear matters. The calculated potentials were approximated with a Woods-Saxon shape. We studied the dependence of the parameters of these Woods-Saxon forms on the masses of the interacting nuclei. © 1984 Springer-Verlag.

El-Sehiemy, R. A., Mostafa Abdelkhalik El-hosseini, and A. E. Hassanien, "Volume 22• Issue 2• 2013", Studies in Informatics and Control-ICI Bucharest, 2013. Abstract
Galal, A., H. K. Hassan, and N. F. Atta, "Voltammetric Study of the Electrocatalytic Oxidation of Formaldehyde on Pt- Pd Co-catalyst Supported on Reduced Graphene Oxide", Electroanalysis, vol. 32, pp. 2733 – 2744, 2020.
Enien, A. E. G. M., E. A. A. Maghraby, N. M. Rateb, and H. R. Abdel-Taweb, "Voltammetric studies on some Thiadiazoles and their Derivatives", Biannual Conference on Chemistry (Chem. 04), Cairo University, Cairo, 5-8 March, 2006. voltammetric_studies_on_some_thiadiazoles_and_their_derivatives.pdf
Elenien, A. - G. M., E. A. A. Maghraby, and A. - H. R. Tawab, "Voltammetric Studies on Some Azoles and Their Derivatives", Biannual Conference on Chemistry (Chem.01), Cairo University, Cairo, 6-9 March, 2000. voltammetric_studies_on_some_azoles_and_their_derivatives.pdf
Attia, A. K., M. A. Al-Ghobashy, G. M. El-Sayed, and S. M. Kamal, "Voltammetric monitoring of linezolid, meropenem and theophylline in plasma", Analytical biochemistry, vol. 545: Elsevier, pp. 54-64, 2018. Abstract
Saad, A. S., A. M. Abou Al-Alamein, M. M. Galal, and H. E. Zaazaa, "Voltammetric determination of lidocaine and its toxic metabolite using C18 silica modified carbon paste electrode", Journal of the Electrochemical Society, vol. 166, issue 2, pp. B103-B109, 2019. Abstract


Saad, A. S., A. A. M. Al-Alamein, M. M. Galal, and H. E. Zaazaa, "Voltammetric Determination of Lidocaine and Its Toxic Metabolite in Pharmaceutical Formulation and Milk Using Carbon Paste Electrode Modified with C18 Silica", Journal of the Electrochemical society, vol. 166, issue 2, pp. 103-109, 2019.