2 research outputs found
Detection of the arterial input function using DSC-MRI data
Accurate detection of arterial input function is a crucial step in obtaining perfusion hemodynamic parameters using dynamic susceptibility contrast-enhanced magnetic resonance imaging. It is required as input for perfusion quantification and has a great impact on the result of the deconvolution operation. To improve the reproducibility and reliability of arterial input function detection, several semi- or fully automatic methods have been proposed. This study provides an overview of the current state of the field of arterial input function detection. Methods most commonly used for semi- and fully automatic arterial input function detection are reviewed, and their advantages and disadvantages are listed
ΠΠ΅Π½Π΅ΡΠ°ΡΡΡ ΡΠΈΠ½ΡΠ΅ΡΠΈΡΠ½ΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΡ Π΄Π°Π½ΠΈΡ Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ MDR-Π°Π½Π°Π»ΡΠ·Ρ
ΠΠ΅ΡΠ°: ΠΠ΅ΡΠΎΡ Π΄Π°Π½ΠΎΡ ΡΡΠ°ΡΡΡ Ρ Π²ΠΈΠΊΠ»Π°Π΄Π΅Π½Π½Ρ Π°Π»Π³ΠΎΡΠΈΡΠΌΡ Π³Π΅Π½Π΅ΡΠ°ΡΡΡ ΡΠΈΠ½ΡΠ΅ΡΠΈΡΠ½ΠΈΡ
ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
Π΄Π»Ρ ΡΠΎΠ³ΠΎ,
ΡΠΎΠ± Π΄ΠΎΠΏΠΎΠ²Π½ΠΈΡΠΈ ΠΌΠ°Π»Π΅Π½ΡΠΊΡ Π²ΠΈΠ±ΡΡΠΊΠΈ Π΄Π°Π½ΠΈΡ
. ΠΠ΅ΡΠΎΠ΄ΠΈ: ΠΠ»Ρ Π΄ΠΎΡΡΠ³Π½Π΅Π½Π½Ρ ΠΌΠ΅ΡΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Π±ΡΠ»ΠΈ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Ρ
ΡΠ°ΠΊΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈ, ΡΠΊ: ΠΊΠΎΡΠ΅Π»ΡΡΡΠΉΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ· (Π΄Π»Ρ Π²ΠΈΡΠ²Π»Π΅Π½Π½Ρ Π·Π½Π°ΡΠΈΠΌΠΈΡ
Π·ΠΌΡΠ½Π½ΠΈΡ
ΡΠ° Π²Π·Π°ΡΠΌΠΎΠ·Π²βΡΠ·ΠΊΡΠ² ΠΌΡΠΆ Π½ΠΈΠΌΠΈ),
MDR-Π°Π½Π°Π»ΡΠ· (Π΄Π»Ρ ΠΏΠΎΠ±ΡΠ΄ΠΎΠ²ΠΈ Π»ΠΎΠ³ΡΡΠ½ΠΈΡ
Π»Π°Π½ΡΡΠ³ΡΠ² Π·Π²βΡΠ·ΠΊΡ ΠΌΡΠΆ ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΠΌΠΈ Π΄Π°Π½ΠΈΠΌΠΈ) ΡΠ° ΡΠ΅Π³ΡΠ΅ΡΡΠΉΠ½ΠΈΠΉ Π°Π½Π°Π»ΡΠ·
(Π΄Π»Ρ ΠΌΠΎΠ΄Π΅Π»ΡΠ²Π°Π½Π½Ρ Π·ΠΌΡΠ½Π½ΠΈΡ
ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
, ΡΠΎΠ± Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°ΡΠΈ ΡΠ΅ Π΄Π»Ρ Π³Π΅Π½Π΅ΡΠ°ΡΡΡ ΡΠΈΠ½ΡΠ΅ΡΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
).
Π Π΅Π·ΡΠ»ΡΡΠ°ΡΠΈ: ΠΡΠ»Π° Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π° Π±Π°Π·Π° Π΄Π°Π½ΠΈΡ
ΠΏΠ°ΡΡΡΠ½ΡΡΠ² Π· ΡΠ΅ΡΡΠ΅Π²ΠΎΡ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠ½ΡΡΡΡ, ΡΠΊΠ° Π΄ΠΎΡΡΡΠΏΠ½Π° Ρ
Π²ΡΠ΄ΠΊΡΠΈΡΠΎΠΌΡ Π΄ΠΎΡΡΡΠΏΡ, ΡΠΎΠ± ΠΏΠ΅ΡΠ΅Π²ΡΡΠΈΡΠΈ ΡΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΈΠΉ Π°Π»Π³ΠΎΡΠΈΡΠΌ Π³Π΅Π½Π΅ΡΠ°ΡΡΡ ΡΠΈΠ½ΡΠ΅ΡΠΈΡΠ½ΠΈΡ
ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
Ρ
Π΄ΡΠΉ; Π² ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ Π±ΡΠ»ΠΈ Π·Π½Π°ΠΉΠ΄Π΅Π½Ρ ΡΡΠ°ΡΠΈΡΡΠΈΡΠ½Ρ Π²Π·Π°ΡΠΌΠΎΠ·Π²βΡΠ·ΠΊΠΈ ΠΌΡΠΆ Π΄Π°Π½ΠΈΠΌΠΈ, ΡΠΊΡ Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°Π»ΠΈΡΡ Π΄Π»Ρ
ΠΏΠΎΠ±ΡΠ΄ΠΎΠ²ΠΈ ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Π»ΡΠ½ΡΠΉΠ½ΠΎΡ ΡΠ΅Π³ΡΠ΅ΡΡΡ. ΠΠ±Π³ΠΎΠ²ΠΎΡΠ΅Π½Π½Ρ: ΠΠ°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΈΠΉ Π°Π»Π³ΠΎΡΠΈΡΠΌ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡ Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ
Π΄Π΅ΠΊΡΠ»ΡΠΊΠΎΡ
ΠΏΡΠΎΡΡΠΈΡ
, Π°Π»Π΅ Π² ΡΠΎΠΉ ΡΠ°Ρ Π²Π°ΠΆΠ»ΠΈΠ²ΠΈΡ
Π΄ΡΠΉ Π²ΠΈΠΊΠΎΠ½Π°ΡΠΈ Π³Π΅Π½Π΅ΡΠ°ΡΡΡ ΠΌΠ΅Π΄ΠΈΡΠ½ΠΈΡ
Π΄Π°Π½ΠΈΡ
, ΡΠΎ Π΄Π°Ρ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ
ΠΎΡΡΠΈΠΌΠ°ΡΠΈ Π²Π΅Π»ΠΈΠΊΡ ΠΌΠ°ΡΠΈΠ²ΠΈ Π΄Π°Π½ΠΈΡ
, ΡΠΊΡ ΠΌΠΎΠΆΠ½Π° Π²ΠΈΠΊΠΎΡΠΈΡΡΠΎΠ²ΡΠ²Π°ΡΠΈ Π΄Π»Ρ ΡΠ΅Π°Π»ΡΠ·Π°ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΌΠ°ΡΠΈΠ½Π½ΠΎΠ³ΠΎ Π½Π°Π²ΡΠ°Π½Π½Ρ
Ρ Π±ΡΠ΄Ρ-ΡΠΊΠΈΡ
Π·Π°Π΄Π°ΡΠ°Ρ
ΠΏΠΎΠ²βΡΠ·Π°Π½ΠΈΡ
Π· ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΠΎΡ.Purpose: The purpose of this article is to outline an algorithm for generating synthetic medical data in order to augment small samples of data. Methods: To achieve the research goal, methods such as: correlation analysis (to identify significant variables and the relationships between them), MDR analysis (to build logical chains of relationships between medical data), and regression analysis (to model medical data variables to use this to generate synthetic data) were used. Results: A database of heart failure patients that is publicly available was used to test the developed algorithm for generating synthetic medical data in action; as a result, statistical relationships between data were found and used to build linear regression models. Discussion: The proposed algorithm allows, with a few simple, yet important actions, to perform the generation of medical data, which makes it possible to obtain large data sets that can be used to implement machine learning methods in any tasks related to medicine