Rapid estimation of the vertebral body volume: a combination of the Cavalieri principle and computed tomography images

Odacı, Ersan; Şahin, Bünyamin; Sönmez, Osman Fikret; Kaplan, Süleyman; Baş, Orhan; Bilgiç, Sait; Bek, Yüksel; Ergur, Hayati

doi:10.1016/s0720-048x(03)00077-9

Cited by 68 publications

(58 citation statements)

References 32 publications

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“…The values obtained in this way are reliable and reproducible. Moreover, the stereological approach could be easily applied without altering routine procedures and the obtained data show little inter-observer variation both at microscopic and macroscopic levels (24,29). Finally, the results of this research will provide an insight for investigation and comparison of hypertrophy, atrophy, and tumor formation in the kidneys.…”

Section: Discussionmentioning

confidence: 75%

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The volume fraction method for the evaluation of kidney: A stereological study

Pazvant¹,

Şahin²,

Kahvecioğlu³

et al. 2009

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:It is known that the kidney size is related to body height, body surface area and body weight. In the present study we propose the volume fraction approach of stereological methods that eliminate the effects of body size over the quantitative evaluation of cortex, medulla and pelvis of kidney. Kidneys were removed from 20 Kivircik sheeps and their volumes were measured using the Archimedean principle. The total volume and volume of its components and the volume fraction of cortex, medulla and the pelvis were estimated stereologically. The mean kidney volumes were 61.3±12.7cm 3 and 59.7±12.8cm 3 , using the Archimedean and the Cavalieri principles, respectively. The obtained values were not found to be significantly different (p>0.05). The kidney was composed of 69.7±3.0% cortex, 27.1±2.9% medulla and 3.2±0.7% pelvis. Our results show that the stereological method applied in this study provides unbiased data about the volumetric characteristics of kidney and can be used on physical section of the evaluation of the volume and volume fractions of kidney and its subcomponents.Key words: Cavalieri principle, renal cortex, renal medulla, renal pelvis, stereology Böbrek değerlendirmesi için hacimsel oran metodu: Stereolojik çalışmaÖzet: Böbrek büyüklüğünün, vücut yüksekliği, vücut yüzey alanı ve vücut ağırlığı ile ilişkili olduğu bilinmektedir. Yapılan bu çalışmada, korteks, medulla ve böbrek pelvisinin rakamsal değerlendirilmesi üzerinde vücut büyüklüğünün etkilerini elimine etmek amacı ile, stereolojik metodlardan hacimsel oran yaklaşımı kullanılmıştır. Materyal olarak 20 adet Kıvırcık koyunundan elde edilen böbreklerin hacmi Arşimed prensibi kullanılarak ölçülmüştür. Ayrıca bu böbreklerin toplam hacmi ve korteks, medulla ve pelvis bölümlerinin hacmi stereolojik olarak tahmin edilmiştir. Arşimed ve Cavalier metodları kullanılarak elde edilen ortalama böbrek hacimleri sırası ile, 61.3±12.7 cm 3 ve 59.7±12.8 cm 3 olarak ölçülmüştür. Elde edilen veriler istatistiki olarak önemli bulunmamıştır (p>0,05). Böbrek, %69.7±3.0 korteks, %27.1±2.9 medulla ve %3.2±0.7 pelvis'den oluşmaktadır. Sonuçlarımız gösterir ki, bu çalışmada kullanılan stereolojik metodlar, böbreğin hacimsel karakteristikleri hakkında ön yargısız bilgi sağlar ve böbrek hacmi, hacimsel oranları ve alt bölümlerinin değerlendirilmesinde kullanılabilir.

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Section: Discussionmentioning

confidence: 75%

“…The volume of biological structures can be obtained by the Cavalieri principle of stereological volume estimation as described in the previous studies (3,9,24,28). This approach allows the evaluation of the volumes of macroscopic and microscopic tissues (25,27) on the basis of physical sections.…”

Section: Introductionmentioning

confidence: 99%

The volume fraction method for the evaluation of kidney: A stereological study

Pazvant¹,

Şahin²,

Kahvecioğlu³

et al. 2009

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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“…Previous studies showed that the obtained volumes using the Cavalieri principle on sectional radiological images showed little inter-rater variation Odaci et al, 2003;Akbaş et al, 2004). However, these studies are not conducted on the brain or its components.…”

Section: Discussionmentioning

confidence: 98%

Evaluation of the Intra-rater Variation for the Estimation of Volume of Cerebral Structures Using the Cavalieri Principle on Magnetic Resonance Images

ELFAKİ¹,

OSMAN²,

ELSHEİKH³

et al. 2011

jecm

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Keywords:Stereology Cavalieri principle Planimetry Magnetic resonance imaging Brain Intra-rater variation ARTICLE INFO ABSTRACTMeasurement of brain volume is regarded as an objective marker of neurodegenerative diseases. The purpose of this study is to evaluate intra-rater variation for the estimation of volume of cerebral structures using the Cavalieri principle on magnetic resonance (MR) images to determine its reproducibility. The MR images of 30 cases were analyzed using the same standard protocols of the Cavalieri principle in two sessions with one month intervals. The structural MR images were analyzed using the ImageJ software by the same observer. The planimetry and threshold process was used for the cut surface area assessments. The volume of hemispheres, total brain, gray and white matters were and lateral ventricles estimated by means of the multiplication of cut surface are by the section interval. The same sections were used in both sessions. The results of two sessions were compared using Wilcoxon Signed Rank test. The mean total brain, right and left hemispheres volumes of first session were 1089.53, 544.82 and 544.71cm 3 , respectively. The mean total brain, right and left hemispheres volumes of second session were 1086.62, 543.99 and 542.63cm 3 , respectively. There was no statistically significant difference between the data (p>0.05). The mean total gray and white matters volumes were 553. 55, 535.98 and 549.32, 537.31cm 3 for the first and second sessions, respectively. There was no statistically significant difference for the gray and white matters results (p>0.05). Our results showed that the reproducibility of the obtained data is good. The volume of cerebral structures could be estimated using the Cavalieri principle on MR images for comparative studies. We are planning to evaluate inter-rater difference in advance.

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“…20) In the Cavalieri principle, a researcher obtains the coefficient of error (CE) to evaluate the reliability of the point density of the grids and sectioning intervals. The CE, or relative standard error, represents the precision of the volume estimate obtained using the Cavalieri principle.…”

Section: Methodsmentioning

confidence: 99%

“…The mean of the two repeated number points counted for any section was used to estimate the section cut surface area for the horizontal scan plan and the volume of the tumor was then estimated using the formula previously described. 17,[20][21][22] Two investigators estimated the volumes of the tumor area on each image of the horizontal plane using the same sets of printed sections of the chest to check the accuracy and the validity of the estimates.…”

Section: Methodsmentioning

confidence: 99%

Relationship between tumorsize of malignant pleural mesothelioma and its response to chemotherapy

Özden

Metintaş

et al. 2007

JOURNAL OF HEALTH SCIENCE

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Purpose: Malignant pleural mesothelioma (MPM) is an extremely lethal neoplasm and continues to be an important health problem in communities facing occupational or environmental exposure to asbestos. One of the most significant problems in the treatment of MPM is the lack of a standardized criterion for the evaluation of response to chemotherapy. In this study, differences between the tumor volumes of International Mesothelioma Interest Group (IMIG) stages, chemotherapy response, and patient response times were investigated. Patients and methods: We used the initial tumor volume determinations from patients with MPM with the point-counting technique indicated in the Cavalieri principle of stereologic design. Results: We observed reduction in tumor volumes from tumor treatment until posttreatment. We found that those patients with the shortest period between initial diagnosis of a tumor volume of 200 mm 3 or greater had increases in volume of greater than 50 mm 3 . Conclusion: There is still no standardized evaluation of MPM responses after chemotherapy to chemotherapy using classic criteria. However, our studies on tumor volume continuer.

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Rapid estimation of the vertebral body volume: a combination of the Cavalieri principle and computed tomography images

Cited by 68 publications

References 32 publications

The volume fraction method for the evaluation of kidney: A stereological study

The volume fraction method for the evaluation of kidney: A stereological study

Evaluation of the Intra-rater Variation for the Estimation of Volume of Cerebral Structures Using the Cavalieri Principle on Magnetic Resonance Images

Relationship between tumorsize of malignant pleural mesothelioma and its response to chemotherapy

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