On Estimating Areas in Radiology and Nuclear Medicine

Behrens, W. E. Von

doi:10.1111/j.1440-1673.1972.tb01374.x

Cited by 2 publications

(17 citation statements)

References 3 publications

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“…3b of Du Bois and Du Bois, 1916) tends to obscure the fact that the individual estimates may be associated with large errors (Boyd, 1935;von Behrens, 1972b). But at least these errors are defined.…”

Section: And the Relationship Between Af X A1 Andmentioning

confidence: 96%

“…(The irnportaiit parameters are asterisked and also set out analytically in Table 2 (von Behrens, 1972a(von Behrens, , 1972b . .…”

Section: Historicid Review Of Defined Paraineters and Established Relmentioning

confidence: 99%

“…In previous papers (von Behrens, 1972aBehrens, , 1972b fundamental principles in estimating the absolute and relative sizes of internal body organs were outlined. In this paper the theoretical and general statements are illustrated with experimental data on the assessment of spleen size.…”

mentioning

confidence: 99%

“…1 also includes magnification factors this is indicated by a dash (eg. Y' and k') after all uncorrected parameters and constants (von Behrens, 1972a(von Behrens, , 1972b. When X of Eq.…”

mentioning

confidence: 99%

“…1 is a reference body size parameter then k or k' is generally known as an organ size index. If possible all such indices should be cited in a form corrected for magnification (von Behrens, 1972b) as well as in the form most convenient for any specialty concerned with organ 440 imaging. Consequently many "corrected" and "uncorrected" spleen sizing equations could be constructed, and it was one oi the aims of the present study to determine those which provide the most accurate results for a given (minimum) expenditure of time, money, and effort (von Behrens, 1972b).…”

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confidence: 99%

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Assessment Of Spleen Size In Vivo

Behrens

1973

Australas Radiol

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Summary Definitions from the radiologic and radionuclide literature on “spleen sizing” are reviewed and summarized. Some established relationships are confirmed and the data are extended in a study based on measurements made on abdominal radiographs from 40 healthy adult volunteers, 15 patients with known splenomegaly and 12 patients in whom diagnostic radionuclide images of the spleen were recorded; measurements were also made on 17 spleens at autopsy. The principles of organ sizing (namely dimensional analysis and similarity theory) are applied to derive a number of equations, a nomogram, and convenient spleen size indices for assessing both the absolute spleen weight and the allometric size of the spleen (namely the size of the spleen relative to the size of the subject) in health and disease. It is shown that occult splenomegaly can be diagnosed with confidence in nuclear medicine before spleen weight is increased 1.3‐fold (on average); in radiology, if the whole spleen projection is visible, splenomegaly can be diagnosed at that value. If only the tip of the spleen is visible as in most plain abdominal radiographs then latent splenomegaly can be diagnosed when, on average, spleen weight is increased 2‐fold. Palpable splenomegaly usually corresponds to a 3.4‐fold increase in spleen weight above the normal value in health.

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Section: And the Relationship Between Af X A1 Andmentioning

confidence: 96%

“…(The irnportaiit parameters are asterisked and also set out analytically in Table 2 (von Behrens, 1972a(von Behrens, , 1972b . .…”

Section: Historicid Review Of Defined Paraineters and Established Relmentioning

confidence: 99%

mentioning

confidence: 99%

“…1 also includes magnification factors this is indicated by a dash (eg. Y' and k') after all uncorrected parameters and constants (von Behrens, 1972a(von Behrens, , 1972b. When X of Eq.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Assessment Of Spleen Size In Vivo

Behrens

1973

Australas Radiol

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Splenomegaly, Macrothrombocytopenia and Stomatocytosis in Healthy Mediterranean Subjects (Splenomegaly in Mediterranean Macrothrombocytopenia)

Behrens

1975

Scandinavian Journal of Haematology

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Spleen size, stomatocytosis, macrothrombocytopenia, haemoglobin level, white cell count, and abdominal pain episodes were assessed in a coded study of healthy Mediterranean immigrants to Australia. Spleen size was estimated from a length measurement, L, on a standardized plain abdominal radiograph and expressed both as spleen weight and as a spleen length index, L/\lBSA; the platelet count and size parameters were determined electronically and the presence of stomatocytes was evaluated in stained blood films. In relation to 16 Northern European control women 12 of 25 Mediterranean women had radiographic splenomegaly, 10 had macrothrombocytopenia, 9 had stomatocytosis, but none had episodes of abdominal pain. The median spleen weights of the two groups were estimated as 157 and 247 g with ranges from percentile 2.3 to 97.7 of 75 to 328 and 112 to 669 g. Within the Mediterranean group splenomegaly correlated with macrothrombocytopenia (P < 0.001) but not with stomatocytosis, haemoglobin values or white cell counts. Thus, mild splenomegaly may be expected in Mediterranean macrothrombocytopenia, Mediterranean stomatocytosis appears unrelated, and all of these apparently benign anomalies may be incidental findings in patients from the Italian and Balkan peninsulas.

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On Estimating Areas in Radiology and Nuclear Medicine

Cited by 2 publications

References 3 publications

Assessment Of Spleen Size In Vivo

Assessment Of Spleen Size In Vivo

Splenomegaly, Macrothrombocytopenia and Stomatocytosis in Healthy Mediterranean Subjects (Splenomegaly in Mediterranean Macrothrombocytopenia)

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