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• W396807636 abstract "This research is motivated by our collaborations with a large French university teaching hospital in order to reduce the Length of Stay (LoS) of stroke patients treated in the neurovascular department. Quick diagnosis is critical for stroke patients but relies on expensive and heavily used imaging facilities such as MRI (Magnetic Resonance Imaging) scanners. Therefore, it is very important for the neurovascular department to reduce the patient LoS by reducing their waiting time of imaging examinations. From the neurovascular department perspective, this thesis proposes a new MRI examinations reservation process in order to reduce patient waiting times without degrading the utilization of MRI. The service provider, i.e., the imaging department, reserves each week a certain number of appropriately distributed contracted time slots (CTS) for the neurovascular department to ensure quick MRI examination of stroke patients. In addition to CTS, it is still possible for stroke patients to get MRI time slots through regular reservation (RTS). This thesis first proposes a stochastic programming model to simultaneously determine the contract decision, i.e., the number of CTS and its distribution, and the patient assignment policy to assign patients to either CTS or RTS. To solve this problem, structure properties of the optimal patient assignment policy for a given contract are proved by an average cost Markov decision process (MDP) approach. The contract is determined by a Monte Carlo approximation approach and then improved by local search. Computational experiments show that the proposed algorithms can efficiently solve the model. The new reservation process greatly reduces the average waiting time of stroke patients. At the same time, some CTS cannot be used for the lack of patients.To reduce the unused CTS, we further explore the possibility of the advance cancellation of CTS. Structure properties of optimal control policies for one-day and two-day advance cancellation are established separately via an average-cost MDP approach with appropriate modeling and advanced convexity concepts used in control of queueing systems. Computational experiments show that appropriate advance cancellations of CTS greatly reduce the unused CTS with nearly the same waiting times." @default.
• W396807636 created "2016-06-24" @default.
• W396807636 creator A5072380471 @default.
• W396807636 date "2010-04-29" @default.
• W396807636 modified "2023-09-23" @default.
• W396807636 title "Combinatorial optimization and Markov decision process for planning MRI examinations" @default.
• W396807636 cites W1500945877 @default.
• W396807636 cites W1515776128 @default.
• W396807636 cites W1550351169 @default.
• W396807636 cites W1608285042 @default.
• W396807636 cites W1964301070 @default.
• W396807636 cites W1965879085 @default.
• W396807636 cites W1968958144 @default.
• W396807636 cites W1969124438 @default.
• W396807636 cites W1969230290 @default.
• W396807636 cites W1973468918 @default.
• W396807636 cites W1973962005 @default.
• W396807636 cites W1979654803 @default.
• W396807636 cites W1981522666 @default.
• W396807636 cites W1984617225 @default.
• W396807636 cites W1986113450 @default.
• W396807636 cites W1990846384 @default.
• W396807636 cites W1992884156 @default.
• W396807636 cites W1996534627 @default.
• W396807636 cites W1999134650 @default.
• W396807636 cites W2003633238 @default.
• W396807636 cites W2004323185 @default.
• W396807636 cites W2004658276 @default.
• W396807636 cites W2007261666 @default.
• W396807636 cites W2008176834 @default.
• W396807636 cites W2011921737 @default.
• W396807636 cites W2014320990 @default.
• W396807636 cites W2018179077 @default.
• W396807636 cites W2021247353 @default.
• W396807636 cites W2023159070 @default.
• W396807636 cites W2026731541 @default.
• W396807636 cites W2028815334 @default.
• W396807636 cites W2030551006 @default.
• W396807636 cites W2033649162 @default.
• W396807636 cites W2035535059 @default.
• W396807636 cites W2036422814 @default.
• W396807636 cites W2037258588 @default.
• W396807636 cites W2037625306 @default.
• W396807636 cites W2039550566 @default.
• W396807636 cites W2040318994 @default.
• W396807636 cites W2040379256 @default.
• W396807636 cites W2056346592 @default.
• W396807636 cites W2056999236 @default.
• W396807636 cites W2057337671 @default.
• W396807636 cites W2057733989 @default.
• W396807636 cites W2058260809 @default.
• W396807636 cites W2063161226 @default.
• W396807636 cites W2074439607 @default.
• W396807636 cites W2078724364 @default.
• W396807636 cites W2083057706 @default.
• W396807636 cites W2085816387 @default.
• W396807636 cites W2085974121 @default.
• W396807636 cites W2086738155 @default.
• W396807636 cites W2088069831 @default.
• W396807636 cites W2089569708 @default.
• W396807636 cites W2094910189 @default.
• W396807636 cites W2095155399 @default.
• W396807636 cites W2098095858 @default.
• W396807636 cites W2098432798 @default.
• W396807636 cites W2101424242 @default.
• W396807636 cites W2110752915 @default.
• W396807636 cites W2115549842 @default.
• W396807636 cites W2115728730 @default.
• W396807636 cites W2116019095 @default.
• W396807636 cites W2116036721 @default.
• W396807636 cites W2119338125 @default.
• W396807636 cites W2119567691 @default.
• W396807636 cites W2122100898 @default.
• W396807636 cites W2123480772 @default.
• W396807636 cites W2125034691 @default.
• W396807636 cites W2125422473 @default.
• W396807636 cites W2130199212 @default.
• W396807636 cites W2130447044 @default.
• W396807636 cites W2132490628 @default.
• W396807636 cites W2136045407 @default.
• W396807636 cites W2141882179 @default.
• W396807636 cites W2143465584 @default.
• W396807636 cites W2143476318 @default.
• W396807636 cites W2144743612 @default.
• W396807636 cites W2145769891 @default.
• W396807636 cites W2152761504 @default.
• W396807636 cites W2159365055 @default.
• W396807636 cites W2160644054 @default.
• W396807636 cites W2168293589 @default.
• W396807636 cites W2168540438 @default.
• W396807636 cites W2169534019 @default.
• W396807636 cites W2195077911 @default.
• W396807636 cites W2338776209 @default.
• W396807636 cites W2356070238 @default.
• W396807636 cites W2391989383 @default.
• W396807636 cites W2525405822 @default.
• W396807636 cites W2598483665 @default.
• W396807636 cites W2800536540 @default.
• W396807636 hasPublicationYear "2010" @default.
• W396807636 type Work @default.

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